your one call when you are in jail. Often referred to as the King of Calls.
My boyfriend used his prison call in jail.
by icedrake523 October 7, 2004
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When you call someone that is only a room away from you, kind of like a glass paine between a prisoner and a visitor.
You are so lazy, quit prison calling me!
by Eminem DA rapper September 29, 2018
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